July 2019: The One With The Refactored Controllers

There are quite a few potentially breaking changes in this one - in particular, refactoring of the blog and news controllers and templates will require action on any site that is using either. The CCBill access payment handler has also been refactored - this should be non-breaking, but obviously as it handles money you probably want to triple-check that for yourself!

Half of the admin controllers now have 100% test coverage, as do all of the DBIC model and schema result files, and the aforementioned CCBill payment handler.

See docs/Changes for more info about changes between 19.6 and 19.7